US Patent 7301089 String tuning adjuster

A string tuning adjuster is a stick including a first aperture, a second aperture and a third aperture. Each aperture has a different diameter with respect to the others. The first aperture is disposed at a center section of the stick, while the second and the third apertures are disposed at opposite ends of the stick. The first aperture or the second aperture is inserted onto a string peg of a cello or a viola, respectively. The third aperture is inserted onto a string peg of a violin to facilitate tune adjustment.